CVE-2024-46754

bpf: Remove tst_run from lwt_seg6local_prog_ops.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Remove tst_run from lwt_seg6local_prog_ops. The syzbot reported that the lwt_seg6 related BPF ops can be invoked via bpf_test_run() without without entering input_action_end_bpf() first. Martin KaFai Lau said that self test for BPF_PROG_TYPE_LWT_SEG6LOCAL probably didn't work since it was introduced in commit 04d4b274e2a ("ipv6: sr: Add seg6local action End.BPF"). The reason is that the per-CPU variable seg6_bpf_srh_states::srh is never assigned in the self test case but each BPF function expects it. Remove test_run for BPF_PROG_TYPE_LWT_SEG6LOCAL.

N/A

CVSS

Severity:

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/9cd15511de7c619bbd0f54bb3f28e6e720ded5d6
https://git.kernel.org/stable/c/c13fda93aca118b8e5cd202e339046728ee7dddb

Frequently Asked Questions

What is the severity of CVE-2024-46754?: CVE-2024-46754 has not yet been assigned a CVSS score.
How to fix CVE-2024-46754?: To fix CVE-2024-46754, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-46754 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-46754 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-46754?: CVE-2024-46754 affects Linux Linux, Linux Linux.

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